Bluetooth Headeset Gold Harmon Kardon Sound For Tone Infinim 4. Latest upgraded Bluetooth 4.0+APTX Headphones : Low-power & Low-latency ,provides high-fidelity and stereo music; Features a newly built speaker in the ears using the famous Harmon Kardon speaker system. 5. Perfect Sport Wireless Headphone : Sweat-proof and rainproof ; Light weight, flexible neckband design ;Super long standby time ---14 hours for music, 12 hours for talking ; 3. Retractable Earbuds :Easy to adjust the length of the line by press a button only 2. The Ear buds are soft and it's wire won't need the hooks anymore, since a press on the button in the side will pull it in its special designated spot.